Optimising Query Answering in the Presence of Access Limitations (Position Paper).
Andrea CalìDiego CalvanesePublished in: DEXA Workshops (2006)
Keyphrases
- query answering
- data exchange
- data integration
- data complexity
- conjunctive queries
- integrity constraints
- incomplete information
- answering queries
- inconsistent databases
- data integration systems
- datalog programs
- transitive roles
- query rewriting
- query answers
- data sets
- query containment
- ontology based data access
- xml data exchange